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Home My WebLink About20110120 Ver 2_Modifications_20130812.�HSW ;e Engineering, Inc. Ms. Jennifer Burdette North Carolina Department of Environment and Natural Resources NCDENR — WEBSCAPE unit 1650 Mail Service center Raleigh, NC 27699 -1650 Re: P -032 Infantry Platoon Battle Course, Holly Ridge, Onslow County DWQ Project # 20110120, USACE Action ID. No. 201100257 Holly Shelter Swamp Creek, (030623,18- 74 -33, C, SW) 401/404 Water Quality Certification Modification of Plans Dear Ms. Burdette: Ik -o1 2ro v2 August 8, 2013 During the course of construction of the referenced project at Marine Corps Camp Lejeune, it was noted that the ditch adjacent to Objective F (Ditch -13, Ditch Type 2) as shown on Sheet CG -121 (attached), and as originally proposed in the environmental permit applications (401, 404, erosion and sedimentation control, and stormwater) is needed to maintain surface water flow in this area. This ditch was removed from the project during the NCDENR stormwater permitting process, but is needed to maintain existing surface water flow in this area. Please see the attached letter to Ms. Joanne Steenhuis of the NCDENR Wilmington office for additional details. This ditch will be constructed in accordance with the issued 401 and 404 permits, but with the discharge point to stream 3 at a slightly different location to minimize disturbance to wetlands. As permitted, the wetland impact area for the entire project is 71.65 acres. As currently proposed on the attached CG -121 plan sheet the new wetland impact area is reduced slightly to 71.62 acres. HSW is currently coordinating with Mr. Brad Shaver ( USACE) and the NCDENR stormwater permitting section (Ms. Christine Nelson) to ensure consistency in construction plans for all environmental permits. Attached are five (5) copies for the referenced revised plan sheet. Please advise if you have any questions or comments. Thank you in advance for your assistance. LEH /SDA/pap Attachments cc: Mr. Neal Paul, MCB Camp Leleune, DPW Ms. Joanne Steenhuis, NCDENR, Wilmington NC. R eQ AUG i 2 2013 3820 Northdale Boulevard • Suite 21 0B • Tampa, Florida • 33624.813/968 -7722 • FAX: 813/962 -2406 _„ . w N'VV . Engineering, Inc. August 7, 2013 Ms. Joanne Steenhuis North Carolina Department of Environment and Natural Resources 127 Cardinal Dr. Ext. Wilmington, NC 28405 Re: 401/404 Water Quality Certification Modification of Plans Infantry Platoon Battle Course (P -032), MCB Camp Lejeune, NC Dear Ms. Steenhuis: During the course of construction of the Infantry Platoon Battle Course (P -032) at Marine Corps Camp Lejeune, it was noted that the ditch adjacent to Objective F (Ditch -13, Ditch Type 2) as shown on Sheet CG-121 (attached), and as originally proposed in the environmental permit applications (401, 404, erosion and sedimentation control, and stormwater) is needed to maintain surface water flow in this area. You may recall that during the stormwater permitting process for this project this ditch was removed. HSW transmitted a letter regarding this minor change to the appropriate 401 and 404 regulatory agency offices. This ditch will be constructed in accordance with the issued 401 and 404 permits, but with the discharge point to stream 3 at a slightly different location to minimize disturbance to wetlands. As permitted, the wetland impact area for the entire project is 71.65 acres. As currently proposed the new wetland impact area is reduced slightly to 71.62 acres. As this ditch was removed from the stormwater permit, HSW has communicated with Ms. Christine Nelson (NCDENR- Stormwater) and is currently in the process of submitting a Stormwater Management Permit Plan Revision Application to include the addition of this ditch as shown on the attached revised plan sheet CG -121. Please advise if you have any questions or comments. Thank you in advance for your assistance. Sincerely, HSW ENGINEERING, INC. C. Dennis Peek, P.E. Vice President / Principal Engineer LEH /CDP /pap cc: Mr. Brad Shaver - USCOE, Wilmington 12@NU V R AUG 1 2 2013 3820 Northdale Boulevard • Suite 21 0B • Tampa, Florida • 33624.813/968 -7722 • FAX: 813/962 -2406 N:3835100 C N:3835000 N:3834900 0 0 w 3.03 SEE SHEET CG -120 GEOFABRIC L7 D DFCI WITH NCDOT CLLA &B STONE RIPRAP,, TOB VARIES MATCH EXISTING GRADE o° SEE SHEET CG -122 ui TOe VARIES MATCH EXISTING--\ GRADE o! a � °o o U 0! i? W a $ w o 2 U °n w a ¢ °a II' " i 1. SEE SHEET CG -501 FOR ROAD SECTIONS. W 1 � c— U) co �A LU LU mop` DETAIL. —' 1 N 3. SEE SHEETS CS-601 THRU CS-603 FOR ROAD HORIZONTAL ALIGNMENT INFORMATION N:3834900 0 0 w 3.03 SEE SHEET CG -120 GEOFABRIC L7 D DFCI WITH NCDOT CLLA &B STONE RIPRAP,, TOB VARIES MATCH EXISTING GRADE o° SEE SHEET CG -122 ui TOe VARIES MATCH EXISTING--\ GRADE o! a � °o o U 0! i? W a $ w o 2 U °n w a ¢ °a II' " 1. SEE SHEET CG -501 FOR ROAD SECTIONS. 2. SEE SHEET EC -500 FOR CONSTRUCTION ENTRANCE DETAIL. N 3. SEE SHEETS CS-601 THRU CS-603 FOR ROAD HORIZONTAL ALIGNMENT INFORMATION U 4. SEE SHEETS CG -200 THRU CG -203 FOR ROAD VERTICAL '- ALIGNMENT INFORMATION. I- W 5. SEE SHEET ER -100 THRU P -032 FOR WETLAND IMPACT / W INFORMATION. 2 6. SEE SHEET CG -301 THRU CG -302 FOR LOW WATER / U) CROSSING (LWC) SECTIONS. W 7. SEE SHEET CG-601 FOR STORM STRUCTURE & PIPE - - U) SCHEDULE. hLOVRAC - 8. SEE SHEET EC-503 FOR EROSION CONTROL NOTES. 9. SEE SHEETS CU -150 THRU CU -531 WATER DISTRIBUTION - - INFORMATION. / 10. SEE SHEET CG -300 FOR STORMWATER PIPE SECTIONS. 11. SEE SHEET EC -503 FOR SEED /SOD INFORMATION. - - 12. ALL NEW GRADING IS MAXIMUM SLOPE OF 3:1. .. - 11 CONTRACTOR TO CONSULT RDD BEFORE THE DETAILED / PLACEMENT OF THE MICRO TERRAIN. THIS IS TO OCCUR AFTER EACH OF THE OBJECTIVES ARE ESTABLISHED. THE NUMBERS AND SIZES OF THE FEATURES WILL REMAIN THE SAME AS THOSE DEPICTED ON PLANS. 4� 14, ACCESS AND SERVICE ROADS ARE NOT DESIGNED FOR - - CONSTRUCTION TRAFFIC, CONTRACTOR SHALL BE i RESPONSIBLE FOR ENSURING THE ROAD GRADES ARE AS - - /' SHOWN ON PLANS AT THE END OF CONSTRUCTION. - (,,)ALL ALL DITCHES SHOWN ON PLANS ARE EXISTING. - - NOTE: CONSTRUCTION ACTIVITIES WITHIN THE SR10 SDZ HAVE RESTRICTIONS / DUE TO SR10 RANGE OPERATIONS. DURING THE MONTHS OF JUNE THROUGH SEPTEMBER AND JANUARY THROUGH APRIL CONSTRUCTION U - IS RESTRICTED TO THE FOLLOWING SCHEDULE. NO CONSTRUCTION CAN OCCUR FROM TUESDAY THROUGH THURSDAY EACH WEEK. THE - Z W CONTRACTOR WILL HAVE THE AREAS WITHIN THE SR10 SDZ FOR F cf) _ - CONSTRUCTION ON FRIDAY THROUGH MONDAY. THERE WILL BE TIMES WHEN THE AREA OF OBJECTIVE F WILL BE AVAILABLE FOR - CONSTRUCTION ACTIVITIES DIFFERENT THAT THE SCHEDULE TIMES O PREVIOUSLY MENTIONED. RANGE CONTROL WILL NOTIFY THE (� -" __.... CONTRACTING OFFICER. THE CONTRACTING OFFICER WILL THEN LJ NOTIFY THE CONTRACTOR OF THIS AVAILABILITY. Z J r � � C7 0 U m F- LEGEND Z Z W UNDISTURBED WETLAND af 0 _ (f) w O W U) - ON-SITE - - BORROW AREA 2 WETLAND IMPACT (WIA) ® W d BOTTOM EL: 11.00 W 11-Ola -o Y2. °o N N Z 713 ii L RQN6E DES /6N TEAM A�G E j1 CyyORb SUITE 2' TAMPA, FLORIDA 33624